package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import sun.nio.ch.SelChImpl;

/**
 * 业务层
 */
@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper,Category> implements CategoryService{
    @Autowired
   private SetmealService setmealService;
    @Autowired
    private DishService dishService;

    @Override
    public void delete(Long id) {
        //添加查询条件
        LambdaQueryWrapper<Dish> lqw = new LambdaQueryWrapper<>();
        lqw.eq(Dish::getCategoryId,id);
        int count = dishService.count(lqw);
        if (count>0){
            throw  new CustomException("当前分类中有关联得数据");
        }
        //查询套餐是否有关联
        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Setmeal::getCategoryId,id);
        int count1 = setmealService.count(queryWrapper);
        if (count1>0){
            throw  new CustomException("当前分类中有关联得数据");
        }
        //正常删除
        super.removeById(id);
    }
}
